Some interfaces, like Hildon or simple games require 3D acceleration, even though they are only rendering fancy 2D graphics. With postmarketOS, we have a lot of devices, where 3d acceleration does not work, or does not work with open source drivers. As a workaround, it is possible to do that kind of rendering in software with mesa-swrast. But that is too slow to be usable in most cases. This article lists some alternatives, that will hopefully be more performant.
TinyGLES was originally written and optimized for the Pandora, which uses the same chipset as the N900. Upstream told us, that it is worth trying at least.
We've tried a bit to get Hildon working, but we did not get very far with it yet.
Current stack: (hardware) - mesa (swrast) - cogl - clutter - hildon New stack: (hardware) - tinygles - glshim - cogl - clutter - hildon
It makes sense to run cogl demos with tinygles before trying anything hildon or clutter related, as Clutter depends on cogl.
- Packaging glshim for pmOS/alpine
- Asking upstream if this is possible
- Unable to run hildon-desktop: Failed to create texture 2d due to size/format constraints
- Pandora thread about glshim (contains debug environment variables etc!)
Not much research has gone into these, please expand.